title: Energy scaling of mode-locked fiber lasers with chirally-coupled core fiber.
abstract: We report a mode-locked dissipative soliton laser based on large-mode-area chirally-coupled-core Yb-doped fiber. This demonstrates scaling of a fiber oscillator to large mode area in a format that directly holds the lowest-order mode and that is also compatible with standard fiber integration. With an all-normal-dispersion cavity design, chirped pulse energies above 40 nJ are obtained with dechirped durations below 200 fs. Using a shorter fiber, dechirped durations close to 100 fs are achieved at pump-limited energies. The achievement of correct energy scaling is evidence of single-transverse-mode operation, which is confirmed by beam-quality and spectral-interference measurements.
authors.affiliation: Department of Applied Physics, Cornell University, Ithaca, New York 14853, USA. sl694@cornell.edu
authors.forename: Simon
authors.initials: S
authors.lastname: Lefrancois
authors.forename: Thomas S
authors.initials: TS
authors.lastname: Sosnowski
authors.forename: Chi-Hung
authors.initials: CH
authors.lastname: Liu
authors.forename: Almantas
authors.initials: A
authors.lastname: Galvanauskas
authors.forename: Frank W
authors.initials: FW
authors.lastname: Wise